Answer:
b
Step-bystep explanation:
when subtracting you could reverse it and add so add back the 2.50 to the 5 and if he spent half of what he had left the that would mean he had another 5 dollars. in total he had 12.50$
Answer:
![x=2y-4](https://tex.z-dn.net/?f=x%3D2y-4)
Step-by-step explanation:
![y=\frac{1}{2} x+2](https://tex.z-dn.net/?f=y%3D%5Cfrac%7B1%7D%7B2%7D%20x%2B2)
"To make x the subject" means to have the equation with all the terms in x on one side. As of now, y is the subject of the equation.
You start by subtracting 2 from both sides, you should get the following.
![y-2=\frac{1}{2} x](https://tex.z-dn.net/?f=y-2%3D%5Cfrac%7B1%7D%7B2%7D%20x)
Then you multiply by 2 from both sides, you should end up with the following.
![2(y-2)=x](https://tex.z-dn.net/?f=2%28y-2%29%3Dx)
Therefore, you get the following.
![x=2(y-2)](https://tex.z-dn.net/?f=x%3D2%28y-2%29)
Finally, you distribute and get the answer.
![x=2y-4](https://tex.z-dn.net/?f=x%3D2y-4)
Answer:
87
Step-by-step explanation:
<u>First method</u>:
- Open Excel and enter 360, 353 and 346 in column A (below each other)
- Select all 3 cells and drag the bottom-right square down to row 40.
<u>Second method</u>:
- Use the equation t(n) = 360-7(n-1)
- Solve for n=40
- t(40) = 360 - 7*39 = 87
130-104=26
26/130=0.2
0.2=20%
Tomas will get a 20% discount if he buys the bat.